выкачиваем и собираем и складываем в отдельную папочку новый gcc
wget ftp://ftp.gnu.org/pub/gnu/gcc/gcc-5.4.0/gcc-5.4.0.tar.bz2 tar xfj ./gcc-5.4.0.tar.bz2 mkdir ./gcc54 cd gcc-5.4.0/ ./contrib/download_prerequisites ./configure --with-system-zlib --disable-multilib --enable-languages=c,c++ --prefix=/opt/gcc54/ make -j 4 make install
прописываем конфигурацию новых библиотек!
[root]# cat /etc/ld.so.conf.d/gcc54_64.conf /opt/gcc54/lib64/
применяем
ldconfig
говорим среде, какие бинарники использовать
export CC=/opt/gcc54/gcc export CXX=/opt/gcc54/g++
и потом уже конфигурим софт, который хотели собрать
ps
еще опции сборки, содранные с системного компилера
./configure --with-system-zlib --disable-multilib --prefix=/opt/gcc54 --enable-bootstrap --enable-shared --enable-threads=posix --enable-checking=release --enable-__cxa_atexit --disable-libunwind-exceptions --enable-gnu-unique-object --enable-linker-build-id --with-linker-hash-style=gnu --enable-languages=c,c++,objc,obj-c++,java,lto --enable-plugin --enable-initfini-array --disable-libgcj --with-cloog=/builddir/build/BUILD/gcc-5.4.0/obj-x86_64-redhat-linux/cloog-install --enable-gnu-indirect-function --with-tune=generic --with-arch_32=x86-64 --build=x86_64-redhat-linux
в итоге имеем 2 вполне рабочих компилера
[root]# gcc -v Using built-in specs. COLLECT_GCC=gcc COLLECT_LTO_WRAPPER=/usr/libexec/gcc/x86_64-redhat-linux/4.8.5/lto-wrapper Target: x86_64-redhat-linux Configured with: ../configure --prefix=/usr --mandir=/usr/share/man --infodir=/usr/share/info --with-bugurl=http://bugzilla.redhat.com/bugzilla --enable-bootstrap --enable-shared --enable-threads=posix --enable-checking=release --with-system-zlib --enable-__cxa_atexit --disable-libunwind-exceptions --enable-gnu-unique-object --enable-linker-build-id --with-linker-hash-style=gnu --enable-languages=c,c++,objc,obj-c++,java,fortran,ada,go,lto --enable-plugin --enable-initfini-array --disable-libgcj --with-isl=/builddir/build/BUILD/gcc-4.8.5-20150702/obj-x86_64-redhat-linux/isl-install --with-cloog=/builddir/build/BUILD/gcc-4.8.5-20150702/obj-x86_64-redhat-linux/cloog-install --enable-gnu-indirect-function --with-tune=generic --with-arch_32=x86-64 --build=x86_64-redhat-linux Thread model: posix gcc version 4.8.5 20150623 (Red Hat 4.8.5-16) (GCC) [root]# /opt/gcc54/bin/gcc -v Using built-in specs. COLLECT_GCC=/opt/gcc54/bin/gcc COLLECT_LTO_WRAPPER=/opt/gcc54/libexec/gcc/x86_64-redhat-linux/5.4.0/lto-wrapper Target: x86_64-redhat-linux Configured with: ./configure --with-system-zlib --disable-multilib --prefix=/opt/gcc54 --enable-bootstrap --enable-shared --enable-threads=posix --enable-checking=release --enable-__cxa_atexit --disable-libunwind-exceptions --enable-gnu-unique-object --enable-linker-build-id --with-linker-hash-style=gnu --enable-languages=c,c++,objc,obj-c++,java,lto --enable-plugin --enable-initfini-array --disable-libgcj --with-cloog=/builddir/build/BUILD/gcc-5.4.0/obj-x86_64-redhat-linux/cloog-install --enable-gnu-indirect-function --with-tune=generic --with-arch_32=x86-64 --build=x86_64-redhat-linux Thread model: posix gcc version 5.4.0 (GCC) [root]#